Speech & Communication

Toddler Stuttering or Stammering

Editorially reviewed | Sources: AAP, ASHA, NIH|Updated June 2026

The short answer

Developmental stuttering - repeating sounds, syllables, or words - is very common in toddlers between ages 2 and 5, occurring in about 5-8% of children. In most cases it's a temporary phase that resolves on its own as the brain catches up with rapid language development. About 75-80% of children who stutter will stop naturally.

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By Age

What to expect by age

18-24 months

Some toddlers begin to show mild disfluencies as their vocabulary explodes and they try to put new words together. Repeating whole words ("I-I-I want that") is especially common and usually reflects the brain working hard to coordinate language. This is called normal disfluency and is part of typical development.

2-3 years

This is the peak age for developmental stuttering to emerge. Your toddler's thoughts are racing ahead of their ability to get words out, which can lead to sound repetitions ("b-b-b-ball"), prolongations ("ssssnake"), or blocks where they seem stuck. Most children move through this phase within 6-12 months.

3-4 years

Stuttering that began around age 2-3 often resolves during this period. If stuttering has persisted for more than 6-12 months, is getting worse rather than better, or your child is showing signs of frustration or avoidance, a speech-language pathologist can help determine whether therapy would be beneficial.

4-5 years

Children who are still stuttering at age 4-5, especially if it started before age 3, should be evaluated by a speech-language pathologist. Early intervention for persistent stuttering is very effective. Boys are about 3-4 times more likely than girls to continue stuttering beyond the developmental phase.

What Should You Do?

When to take action

Probably normal when...
  • Your toddler repeats whole words or phrases ("I want-I want-I want juice") - this is the most common and least concerning type of disfluency.
  • The stuttering comes and goes, sometimes disappearing for weeks before returning - this waxing and waning pattern is typical of developmental stuttering.
  • Your toddler stutters more when excited, tired, or trying to tell a complex story - situational stuttering is very common.
  • Your toddler doesn't seem frustrated or aware of the stuttering and continues to communicate eagerly.
  • The stuttering has been present for fewer than 6 months.
Mention at your next visit when...
  • The stuttering has lasted longer than 6 months without improvement.
  • Your child is showing physical tension when stuttering - facial grimacing, eye blinking, head movements, or visible struggle to get words out.
  • Your child is becoming frustrated, avoiding speaking, or saying "I can't talk" or "the words won't come out."
  • There is a family history of persistent stuttering (stuttering that continued into adolescence or adulthood).
Act now when...
  • Your child suddenly begins stuttering severely after previously speaking fluently, especially after a head injury or illness.
  • Your child has completely stopped trying to speak due to stuttering-related frustration or anxiety.

Sources

Trust your instincts. If something feels wrong, reach out to your pediatrician.

Worrying about your baby means you care. That is a good thing.

Accent vs Speech Disorder in Bilingual Toddlers

When toddlers grow up hearing more than one language, they naturally blend sounds, patterns, and accents from both languages. This is normal and healthy, not a speech disorder. A bilingual child may pronounce some sounds differently than monolingual peers because they are learning the sound systems of two languages simultaneously. True speech disorders affect both languages equally, while accent influence appears only in specific sounds borrowed from one language to another.

Ear Fluid Affecting Baby's Speech Development

Chronic or recurrent middle ear fluid (otitis media with effusion) can temporarily reduce hearing by 15 to 40 decibels, which is like hearing through water. During critical periods of language learning, this muffled hearing can impact speech and language development. If your baby has frequent ear infections or persistent fluid, discuss the potential speech impact with your pediatrician.

Will Ear Tubes Help My Child's Speech?

Ear tubes (tympanostomy tubes) can restore normal hearing by draining persistent fluid from the middle ear. Many children show speech and language improvement within weeks to months after tube placement, particularly if hearing loss from fluid was contributing to their speech delay. However, ear tubes alone may not resolve all speech delays, and some children benefit from speech therapy alongside tube placement.

Baby Failed Newborn Hearing Screen - What Now?

Failing a newborn hearing screen does not necessarily mean your baby has hearing loss. Many babies who fail the initial screen pass on follow-up testing. However, it is critical to complete follow-up testing by 3 months of age. If hearing loss is confirmed, early intervention by 6 months of age leads to significantly better language outcomes.

Baby Using Jargon but No Real Words

Jargon babbling, which sounds like your baby is having a conversation in a made-up language, typically appears between 10 and 14 months and is a positive sign that your baby is learning the rhythm and melody of speech. Real words usually emerge from jargon over the following months. If no real words appear by 16 to 18 months, a speech evaluation may be helpful.

My Baby Is Losing Words or Skills

If your child was consistently using words and has truly stopped, this is something to act on promptly. Regression - the genuine loss of skills a child previously had - is different from a normal plateau or a toddler being too busy to talk, and it always warrants a conversation with your pediatrician sooner rather than later.